Search Results for author: Francesco Fabbri

Found 10 papers, 6 papers with code

Towards Graph Foundation Models for Personalization

no code implementations12 Mar 2024 Andreas Damianou, Francesco Fabbri, Paul Gigioli, Marco De Nadai, Alice Wang, Enrico Palumbo, Mounia Lalmas

In the realm of personalization, integrating diverse information sources such as consumption signals and content-based representations is becoming increasingly critical to build state-of-the-art solutions.

Language Modelling Large Language Model +1

Robustness in Fairness against Edge-level Perturbations in GNN-based Recommendation

1 code implementation24 Jan 2024 Ludovico Boratto, Francesco Fabbri, Gianni Fenu, Mirko Marras, Giacomo Medda

Efforts in the recommendation community are shifting from the sole emphasis on utility to considering beyond-utility factors, such as fairness and robustness.

Fairness Recommendation Systems

FedFNN: Faster Training Convergence Through Update Predictions in Federated Recommender Systems

no code implementations14 Sep 2023 Francesco Fabbri, Xianghang Liu, Jack R. McKenzie, Bartlomiej Twardowski, Tri Kurniawan Wijaya

Federated Learning (FL) has emerged as a key approach for distributed machine learning, enhancing online personalization while ensuring user data privacy.

Federated Learning Recommendation Systems

GNNUERS: Fairness Explanation in GNNs for Recommendation via Counterfactual Reasoning

1 code implementation12 Apr 2023 Giacomo Medda, Francesco Fabbri, Mirko Marras, Ludovico Boratto, Gianni Fenu

Moreover, an empirical evaluation of the perturbed network uncovered relevant patterns that justify the nature of the unfairness discovered by the generated explanations.

counterfactual Counterfactual Explanation +3

Streaming Algorithms for Diversity Maximization with Fairness Constraints

1 code implementation30 Jul 2022 Yanhao Wang, Francesco Fabbri, Michael Mathioudakis

Given a set $X$ of $n$ elements, it asks to select a subset $S$ of $k \ll n$ elements with maximum \emph{diversity}, as quantified by the dissimilarities among the elements in $S$.

Attribute Data Summarization +2

Rewiring What-to-Watch-Next Recommendations to Reduce Radicalization Pathways

1 code implementation1 Feb 2022 Francesco Fabbri, Yanhao Wang, Francesco Bonchi, Carlos Castillo, Michael Mathioudakis

Hence, we define the problem of reducing the prevalence of radicalization pathways by selecting a small number of edges to "rewire", so to minimize the maximum of segregation scores among all radicalized nodes, while maintaining the relevance of the recommendations.

Recommendation Systems

Fair and Representative Subset Selection from Data Streams

1 code implementation9 Oct 2020 Yanhao Wang, Francesco Fabbri, Michael Mathioudakis

We study the problem of extracting a small subset of representative items from a large data stream.

Data Summarization Fairness +1

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